From Warner Home Video! Season Six kicks off in space, where Howard is caught in an argument between Bernadette and his mom. Back on Earth, Sheldon decides to hire Alex, a young female assistant, which makes Amy feel threatened. Meanwhile, Leonard and Penny make strides to define their relationship, and Raj attempts to find love. Find out what surprises are in store for everyone, once Howard returns from space, in these 24 must-watch episodes! Numerous Bonus Features are included: Commentaries, Featurettes, Character Profiles, Gage Reel, Paley Fest 2013 highlights, and more. Combo Pack includes both Blu-Ray and DVD formats. Also available in standard DVD format.